One of San Francisco's oldest restaurants, run by one of the city's most prominent families, the Aliotos, this Fisherman's Wharf landmark has a long-standing reputation for serving the Bay Area's best cioppino. The curbside crab stand, Oysteria Deli, the Steam Kettle Bar, and the new Nonna Rose restaurant are great for a quick, inexpensive dose of San Francisco's finest; for more formal and fancy selections, continue up the carpeted stairs to the multilevel, harbor-view dining room. Don't mess around with the menu: You're after Dungeness crab. Cracked, caked, stuffed, or stewed, it's impossible to get your fill, so bring plenty of money--particularly if you intend to order from Alioto's prodigious (and pricey) wine list. If you don't care for cracked crab (I can't imagine that!), try the griddle-fried sand dabs and rex sole served with tartar sauce.